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분수 2자리 (분모가 같은)

1
6 21
+
1 21
=
7 21
6
+
1
=
1 3
2
1 12
+
3 12
=
4 12
1
+
3
=
1 3
3
3 21
+
8 21
=
11 21
4
8 71
+
2 71
=
10 71
5
2 53
+
4 53
=
6 53
6
4 36
+
3 36
=
7 36
7
3 14
+
1 14
=
4 14
3
+
1
=
2 7
8
1 73
+
2 73
=
3 73
9
2 89
+
1 89
=
3 89
10
1 36
+
4 36
=
5 36
11
4 60
+
1 60
=
5 60
4
+
1
=
1 12
12
1 88
+
5 88
=
6 88
1
+
5
=
3 44
13
5 60
+
7 60
=
12 60
5
+
7
=
1 5
14
7 50
+
1 50
=
8 50
7
+
1
=
4 25
15
1 58
+
2 58
=
3 58